Dust-collecting apparatus.



No. 878,329. PATENTED FEB. 4, 1908.

' G. R. BIMM.

DUST COLLECTING APPARATUS.

APPLICATION FILED MAR. 25, 1107.

7725766315 as'x- A flzezzorx- GEORGES ROBERT'BDIM, OF PARIS, FRANCE.

DUST-COLLECTING APPARATUS.

Specification of Letters Patent.

Patented Feb. 4, 1908.

Application filed March 25. 1907. Serial No. seams.

- REISSUED To all whom it may cohcem:,

Be it known that I, GEORGES ROBERT BIMM, citizen of the Republic of France, residing at Paris, in France, have invented new and useful Improvements in or Relating to Dust-Collecting Apparatus, of which the following is a specification.

- This invention relates to ap aratus for the removal of dust by suction ant has for its object to rovide an apparatus'which can be manipu ated by hand by the single person required to movethe nozzle of the ap aratus over the surface of the articles to be c eaned.

In the accompanying drawings which show three constructions according to this invention, Figures 1 to 3 are Views in longitudinal section of three different constructions of the apparatus, and Fig. 4 is a plan of the .COQSlJlIlCt-IOII shown in Fig. 3.

With reference to 1 manually operable air controlling mechanism is shown in the form of a pump body 10 provided with a piston 11 wh1ch can be manipulated by hand by means of a rod 12 freely guided by a socket or sleeve '13 which forms an extension on the up er end of the pump body 10. Air inlet an exhaust valves 14 and 15 respectively are also formed in the pum body 10. To the lower end of the pump body 10 is connected in an air tight manner a nozzle chamber 16 within which. is mounted a frame 17 provided with a filtering means in the form ofa cloth 18 of very fine mesh through which air but not dust may pass. For simplifying the joint between the parts 10 and 16 the frame 17 is provided with a flange. which is clamped between the members 16 and ,10 when the various parts are assembled. In this construction as in that shown in Figs. 3 and 4 the chamber 16 has its free end fiattened so as to present a nozzle orifice 19 of small width and of a comparatively great length. The orifice 19 is provided with flanges 20 suitably bent to enable the apparatus to be moved along the articles to be cleaned without scratching or catching in them.

It will be understood that if the piston 11 i is reciprocated in the pump body 10, when the piston is moved away from the valve 14, air will be drawn in through the latter after having passed through the conduit 21, chamber 16 and thefilter 18, while at the op osite movement of the piston 11, the air rawn into the body 10,'will be dischar ed through the valve 15. The air drawn t ough the orifice 19 by the suction stroke will carry with it into the chamber 16, any dust situated on the surface of the articles along which the flanges 20 are moved and the air will be freed from dust during its passage through the filter 18. The air discharged through the valve 15 immediately behind the filter 18 will thus be uite free from dust.

It must be pointe out that, owing to the large surface offered by the elongated sha e ofthe frame 17 on which is mounted the ltering cloth 18, the resistance to the suction produced by the presence of the said cloth 18 is insignificant, and the operation of the piston is greatly facilitated by it.

Fig. 2 shows a construction of apparatus in which suction can be produced in a chamber arranged along the body of' the pump 10.

To that end, a conduit 22 connects the front portion of the pum body 10 to its rear portion, the piston ro 12 passes in an air tight manner through the sleeve 13 and the suction and discharge valves 14 and 15 are arranged in the rear portion of the body 10.

i In the modification illustrated in Figs. 3 and 4, the conduit 22 is provided as in the construction shown in Fi 2, the rod 12 is again mounted in an air tlght manner in the sleeve 13 and further a pair of valves 14 and 15 are arranged at each end of the body 10, so that the apparatus is a double acting one, that is to say, it draws in dust laden air and discharges pure air at each stroke of the piston 11. Moreover, in the construction shown in Figs. 2 and 3, the nozzle member 23 of the apparatus which is. provided with flanges 20 and orifice 19, is mounted on the chamber 16 in such manner that it can oscillate relatively to the latter and so enables the chamber to follow any involuntary movement im arted to it by the o erator without raising the flanges 20 from t e article being cleansed.

In the various constructions according to this invention, thedust accumulates in the bottom 1portion of the chamber 16 and is removed om time to time by disconnecting the parts 10 and 16. The arrangement of the conduit 21 which opens at the u per por- I Itwill be obvious that when the device of my 7 upper Wall of the casing 16, forms the 'connozzle movably mounted in said chamber provided with a nozzle and a Wall forming invention is in use it will be held in a slightly inclined position from thevertical and therefore the dust particles will lodge in the closed portion of the casing at the nozzle end thereof. The Wall 21, which together with the duit 21 is convenientlyrecessed to receive the cylindrical head of the nozzle 19 and the upper Wall of the casing 16 extends gver said head and retains the same in said recess. Having now particularly described and as certained the nature of my said invention and in What manner the same is to be performed Idec'lare that What I claim is 1. A portable dust collecting apparatus comprising in combination, a pump, a nozzle chamber communicating With said pump, a

and adapted to'ibemoved abreast of the surface to be cleaned, and an. air filter interposed between said pump and "clr mber. 2. A portable dust col ecting apparatu comprising in combination, a nozzle chamber with theupper Wall of said chamber a consaid chamber. 1

3. A portable dust collecting apparatus comprising in combination, a nozzle-chamber provided with a nozzle and a Wall forming with one Wall of-sa id chamber a conduit and wlth another Wall thereof a dust trap, said Wall and the Walls of said chamber being recessed, said nozzle being movably mounted 111 said recess, and a pump communicating with said chamber. V a

4. A portable dust collecting apparatus comprising in combination, a-pump, a nozzle chamber communicating with said pump and provided with a dust trap, and a nozzle mov-.

ably mounted in said chamber and adapted to be operated abreast of the surface to be cleaned;

In'testimony whereof I have aflixed my signature, in presence of two subscribing witnesses. I

GEORGES ROBERT BIMM.

Witnesses:

JULIEN OAVONE, DEAN B. lVlASON. 

